Matrix for typographical composing and casting machines



May 6 1924. C. MUEHLEISEN MATRIX FOR TYPOGRAPHICAL COMPOSING AND CASTINGMACHINES Filed April 2 1.922

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Patented May 6, 1924,

rs'mrss CARL M'UEHLEISEN, or BERLIN, eannrnnn-nssrenon' rorlrnnenncrnannn Lrnoaxrn COMPANY, or BROOKLYN, new-Yong.

MATRIX non TY OGRAPHICA coMrosING AND cesrrne ivmon rnns.

Application filed April as, '1922'. seriai Nb. 'ssaeeo.

To all whom it may concern:

Be it known that I CARL MUnHLnIsEN, a citizen of the United States ofAmerica, and residing at Chausseestrasse 23, Berlin, N. 4, Germany, haveinvented new and useful Improvements in Matrices for TypographicalComposing and Casting Machines, of which the following is thespecification.

In typographical composing and casting machines such as those knowncommercially under the trade mark Linotype it is known for the matricesjust prior to their being dis tributed to be lifted singly by aso-called matrix lifter finger which raises them into engagement withthe distributor screws, by which they are carried along the distributorbar In order to ensure that only one matrix shall be lifted at a time,the bodies of all matrices whatever their thickness are reduced to acommon thickness along a central vertical line each by a central groovewhich reduces the said last-named thickness to that of the thinnestmatrices to be dealt with by the distributor. When very thick matricesare used, this grooving considerably weakens the bodies thereof, so thatthe latter are easily crushed when the mold presses against them duringthe casting of the line.

The object of the present invention is to overcome the aforesaiddifliculty by extending the groove in each such thick matrix downwardsonly to the extent which is necessary for allowing the matrix to belifted into the distributing mechanism. I

In the accompanying drawings, which illustrate, by way of example, anumber of constructional forms of the invention a Figure 1 is a sideelevation of the distributor lift box in which the matrices are liftedinto engagement with the distributor;

Figure 2; a side elevation of a thick matrix as now commonly used;

Figure 3, a central vertical section, and Figure 4, a plan of the samematrix;

Figure 5, a view similar to Figure 4 il lustrating the distortion towhich such a matrix is liable;

Figure 6, a view similar to Figure 2 showmatrix according to the presentinvention;

Figure 7 a central vertical section of the same matrix;

Figures 8 and 9, views respectively similng one constructional form ofthe improved lar to Figures 6 and 7 of a second constructional form.

The distributor lift box a, which is of ordinary construction, has aribbed bar I) along which the matrices 0 are pushed in the directionindicated by the arrow, and the foremost matrix is lifted by theconstantly reciprocating lift finger at over the stop shoulders of thebar e in order to reach the distributor screws, all in the well-knownmanner. In order to ensure that only the leading or foremost matrixshall be lifted, a thin blade fis fitted, also in the known manner,tothe ribbed bar 72, the said blade being adapted. to engage the centralgroove g of the matrix. Between the front edge of the said blade f andthe aforesaid stop shoulders against which the leading matrix bearsthere is only suflicient room to accommodate the thinnest matrix, allmatrices other than these thinnest ones each having a groove g (Figures2 and 3) which receives the blade 7 when said matrices are raised, so asto prevent any but the leading matrix being lifted by the finger d.

When a very thick matrix has to be dealt with, such as that illustratedin Figures 2 and 8, the central groove 9 considerably weakens the bodythereof, this weakening being greatly accentuated in matrices in whosefeet are provided font distributing notches such as that marked it inthe figures now under review. When matrices of this description arepresent in a composed line, it may easily happen that they becomecrushed by pressure against the casting mold and consequently deformedin the manner shown in Figure 5.

The object of the present invention may be attained bythe constructionalform shown in Figures 6 and 7, according to which the matrix has theusual groove 9 milled into it. this groove-being afterwards tightlyfilled in, at its lower part, by a strip a, which latter isdistinguished by hatchet lines in said figures.

Further, as shown in Figures 8 and 9 the matrix may, after it has beenprovided with the usual groove 9, be drilled through to receive a plug 0which will act as a reinforcing member and prevent the matrix from beingcrushed in.

Having described my invention, I declare that What I claim and desire tosecure b Letters Patent is v v 1. In or for a linotype machine, gjmatriformed with a separating sldti'e'iztending practically throughout thelength of the matrix and provided With a reinforcing plug to prevent thecollapse of" the matrix',"th'e said reinforcing plug being located at apoint far enough below the utiriefiidbf 10 the separating slot to ermitrna tri g z to be lifted into engagement with the distributing mechanismof said linotype machine.

QZJA matrix" according to claim 1, characterized by the fact that thereinforcing plug therein recited is in the form of a filling pieceinserted in the lower part of the slepa'rating slot.

In testimony whereof I have aflixed my signat nie'lierto.

CARL MUEHLEISEN.

